“A sport is an organized, competitive, entertaining, and skillful physical activity requiring commitment, strategy, and fair play, in which a winner can be defined by objective means. It is governed by a set of rules or customs. In sports the key factors are the physical capabilities and skills of the competitor when determining the outcome (winning or losing). The physical activity involves the movement of people, animals and/or a variety of objects such as balls and machines or equipment. In contrast, games such as card games and board games, though these could be called mind sports and some are recognized as Olympic sports, require primarily mental skills and only mental physical involvement. Non-competitive activities, for example as jogging or playing catch are usually classified as forms of recreation.”
(Wikipedia, Sports, 12/13/2010)

Golf Balls

Recent US Patents

 10/12/2010
7,811,500
Method for manufacturing a sports racquet

Gazzaro et al of Prince Sports molded a sports racket frame using a moldable tube structure and two inflatable bladders.  The structure and bladders are placed in a mold and the bladders inflated.  The material is cured and the bladders deflated and the frame removed.  (RDC 1/7/2011)